Preston

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fun fact: Preston is a blue brindle - blue is a dilute of black, if his color wasn't "diluted" he would've been a red brindle. The grayish tinge of the "Blues" are what people often think of when they think of Greyhounds - however that is a fairly rare color for them to come in. The "grey" of Greyhound is a refernce to ancient words meaning "shining or bright."